Changes made from version 2.50 to 2.60: Fixed issue causing possible slow boot times
Changes made from version 2.40 to 2.50: Improved average ascent and average descent data fields
Improved vertical speed and grade data fields
Improved transfer speed between device and BaseCamp Mobile or Garmin Connect Mobile (64s/64st models)
Fixed potential issue when programming a chirp (64s/64st models)
Fixed potential shutdown when using smart notifications
Fixed displaying duplicate smart notifications in certain instances
http://www8.garmin.com/support/download ... sp?id=6805